A cruel practical joke made headlines this week when an autistic Cleveland teenager, believing he was participating in the ALS ice bucket challenge, instead had a mixture of urine, feces, spit, and cigarette butts dumped on his head. Now, comedian and amateur law enforcement agent Drew Carey is looking for answers.

Carey—also a Cleveland native—offered on Saturday to contribute $10,000 to a reward fund run by the Bay Village police. The local force has reportedly been investigating the cruel prank since the boy's parents alerted them to the video last week.

Police said Friday that they are working with the local high school, "analyzing the device used to record the video, interviewing witnesses, determining exactly where and when this occurred and identifying those involved."

They believe the video was made in a student's home "prior to the start of the school year."

Carey also pledged on Twitter that he will donate the money to Autism Speaks if the police turn down his offer.

[image via AP, h/t Daily Dot]